Device for effecting the registration of plates for multicolor printing



Dec. 23, 1924. 1,520,102

E. BAssET-r DEVICE FOR EFFECTING THE REGISTRATION OF PLATES FOR MULTICOLOR PRTNTING Filed May 12, 1924 e iv `Z f IZ le Patented Dec. 23, 1924.

ELISHA BASSETT, OF LONDON, ENGLAND.

DEVICE FOR EFFEGTING THE REGISTRATION OF PLATES FOR MULTICOLOR PRINTING.

Application led May 12, 1924. Serial No. 712,904.

To aZZ whom. it may concern:

Be it known that I, ELIsHA Bassum, a subject of the King of England, residing at London, England, have invented certain Improvements in Devices for Eifeeting the Registration of Plates for Multicolor Printing, of which the following is a specifica` tion.

This invention relates to a device for effecting the registration of plates for multicolor printingg'and consists in the provision of two slabs, one of wood for the reception of the lay-out sheet, and one of iron for the reception of the mounting board, the slabs being butted and fixed together and fitted with a hinged frame arranged so that it can be superposed on either slab, a number of double-pointed pins being adjustably arranged in the frame perpendicularly to the plane of the latter so that, after they have been set to certain points on the lay-out sheet, the opposite points can be used on the mounting board for indicating corresponding points on the latter.

Fig. 1 of the accompanying drawings represents a vertical section of the device, and

Fig. 2, an elevation of the same at right angles to Fig. 1 and at a larger scale and showing the frame in upright position.

Fig. 3 is an enlarged section taken on the line 3-3 of Fig. 2.

The device is composed of an iron slab a to which marginal rails b are secured so as to form a frame. Another slab c of wood is buttted to the slab a and secured to the latter for instance by means of a frame cl of angle iron which embraces both slabs. An ironk frame e is hinged to the structure so that it can be superposed on either slab. Preferably the arrangement is such that while the frame e lies flat on the slab e in one position, as shown by full lines in Fig. 1, it rests on the rails Z9 in the other position, as shown by dotted lines. At two opposite sides the frame e is formed with internal fillets f along which two or more cross-bars g can be adjusted, the ends of the cross-bars being forked for engagement with the fillets, as shown in Fig. 3. Clamp-screws 71, are tted in the forks for securing the bars to the fillets in adjusted position. Each cross-bar has a plurality of threaded studs tted with nuts z' by means of which forked or slotted arms 7s can 'be secured. t@ the bar in any desired.

position within the plane of the frame e. One end of each arm carries a doublepointed pin Zwhich is held perpendicularly to the plane of the frame so that one point can be turned towards the slab c and the other towards the slab a by'a reversal. of

the different plates, is attached to the slabl c by means of drawing pins, and the frame e is superposed thereon as shown by full lines in Fig. 1. Two pins Z are usedv for each plate, and these are adjusted to distanced, well defined points on the impression, for instancewhere lines meet or intersect at an angle, and inserted at such points into the slab o. The pins are fixed iu adjusted position by means of nuts z', whereupon the frame e is turned over 0nto the slabe a, as shown by dotted lines in Fig. 1. The non-scratching points will then be held over the mounting board m, the plates o are adjusted on the latter until they register with the pins in the same manner as the corresponding points.v When properly adjusted, the plates are nailed to the mounting board which then can be removed for printnig. The plates for the other colors are adjusted relative to the pins and fixed to their boards in the same manner. l

After the pinsZ have been set relative to the lay-out sheet, it is advisable to check the setting in respect of the opposite pin points in case any of them should be out owing to mechanical defects of the structure. For this purpose a stift? paper sheet is placed loosely on the lay-out sheet, and an impression is taken on it of the pin points. vThe sheet is then removed and placed either on the points above or, if the sheet should be large, on the mounting board, the framev being superposed on it. Any of these points which do not'register properly with the corresponding pin hole., is readjustedl aGcOrdingly. j

Ll il) As it is necessary :torythe trame e to be quite steady relative to the slabs, it is pret erably adapted to turn about center points p which are supported in screws fitted in the bearing bracket Q. ln the case oit a large apparatus the traine e is preferably counterbalanced by Weights 'r connected to it by curved arms s, as shoivn by dotted lines in Fig. 2.

I claim l. A device for effecting the registration of plates tor multi-color printing, comprising an iron slab for the reception of the mounting board, a Wooden slab for the reception of the lay-out sheet, the slabs being butted and iixed together, and extending substantially in the same plane, a substantially llat trame, hinge means connecting said iframe to said slabs so that it can be superposed on either slab, double-pointed pins arranged adjustably in said trame perpendicularly to the plane oft the latter so that they can, by a reversal ot the traine, be used for indicating identically related points on the lay-out sheet andL on the mounting board and means connecting said pins to said `frame.

2. A device for effecting the registration ot plates for multi-color printing, comprising an iron slab for the reception of the mounting board, a Wooden slabl for the reception of ithe lay-out sheet, the slabs being butted and fixed together, and extending substantially in the sameplane, a substantially flat trame, hinge means connecting said ,ti-ame to said slabs so lthat it can be superposed on either slab, cross-bars held adjustably in said trame, forked arms connected to said bars so that they can be adjusted longitudinally and angularly thereon in the plane of the frame, and doublepointed pins connected to said arms at right angles to the plane of the 'frame sol that they can, by a reversal of the frame, be used tor indicating identically related points on the lay-out sheet and on the mounting board.

3. A device for effecting the registration ot plates Jfor multi-color printing, comprising an iron slab for the reception ot the mounting board, a Wooden slab orthe reception of the lay-out sheet, the slabs being lnitted and fixed together, and extending substantially in the same plane, a substantially flat frame, hinge means connecting said traine to said slabs so that it can be superposed on either slab, llets formed at the inside of the Ytrarne members, bars held on said fillets across the trame so that they can be adjusted to various positions, and double-pointed pins arranged adjust-ably on said bars at right angles to the plane of the frame so that they can, by a reversal of the traine, be used tor indicating identically related points on the lay-out sheet and on the mounting board.

L A. device for elliecting the registration ol plates for multi-color printing, comprising an iron slab for the reception of the mountin hearth aiveoden slab tor the reception of the lay-out sheet, the slabs being butted and fixed together, and extending substantially in the same plane, a substantially flat frame. hinge means connecting said frame to said slabs so that it can besuperposed on either slab, doubleepointed pins arranged adjustably in said frame perpendicularly to the plane ot the latter so that they can, by a reversal of the rame,rbe used for indicating identically related points on the lay-out sheet and on the mounting board, the pins being` provided with steel points to tace the lay-out sheet and with non-scratching points to face the mounting board and means connecting said pins to said frame.

5. A, device tor effecting the registration ot' plates 'tor multi-color printing, compris au iron slab for the reception of the mounting board, a wooden slab tor the reception oit the lay-out sheet, the slabs being butted and fixed together, extending substantially in the saine plane` a substantially Hat frame, hinge means in the torni of pointed pivots holding said frame at the junction of the slabs so that it can be superposed on either slab. doubleepointed pins arranged adiustably in said frame perpendicularly to the plane the latter so that they can, by a reversal et' the frame, be used for indicating identically related points on the lay-out sheet and on the mounting board and means connecting said pins to said frame.

ELSHA BASSETT, 

